Add hidden value to imput form (probably JS) [closed]
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 months ago . Improve this question So, I have this html form which the user fills up with his/her info. There is the mobile number field. I´d like to add the country code automatically, but hidden from the user (since it´s going to be just a local - geographic - marketing action, it´s a fixed